Quectel BG77, Hardware Design

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LPWA Module Series
BG77 Hardware Design
BG77_Hardware_Design 12 / 76
2.2. Key Features
The following table describes the detailed features of BG77 module.
Table 2: Key Features of BG77 Module
Features Details
Power Supply
 Supply voltage: 2.6V~4.8V
 Typical supply voltage: 3.3V
Transmitting Power Class 5 (21dBm+1/-3dB) for LTE-FDD bands
LTE Features
 Support 3GPP Rel. 14
 Support LTE Cat M1 and LTE Cat NB2
 Support 1.4MHz RF bandwidth for LTE Cat M1
 Support 200KHz RF bandwidth for LTE Cat NB2on
 Cat M1: Max. 588Kbps (DL)/1119Kbps (UL)
 Cat NB2: Max. 127Kbps (DL)/158.5Kbps (UL)
Internet Protocol
Features
 Support PPP/TCP/UDP/SSL/TLS/FTP(S)/HTTP(S)/NITZ/PING/MQTT/
CoAP protocols
 Support PAP (Password Authentication Protocol) and CHAP
(Challenge Handshake Authentication Protocol) protocols which are
usually used for PPP connections
SMS
 Text and PDU mode
 Point to point MO and MT
 SMS cell broadcast

SMS storage: ME by default
(U)SIM Interface Support 1.8V USIM/SIM card only
Audio Feature Support one digital audio interface: PCM interface*
USB Interface
 Compliant with USB 2.0 specification (slave only)
 Support operations at low-speed and full-speed
 Used for AT command communication, data transmission, GNSS
NMEA output, software debugging and firmware upgrade
 Support USB serial drivers for Windows 7/8/8.1/10, Linux 2.6/3.x (3.4
or later)/4.1~4.15, Android 4.x/5.x/6.x/7.x/8.x/9.x
UART Interfaces
Main UART:
 Used for data transmission and AT command communication
 115200bps baud rate by default

The default frame format is 8N1 (8 data bits, no parity, 1 stop bit)
 Support RTS and CTS hardware flow control
Debug UART: